Quote:
Originally Posted by jamesqf
Not so. First, even with the engine off, you should have enough reserve vacuum for several brake applications - plenty of time to start the engine again. Second, with any car (or even largish truck) you do not need power steering at highway speeds unless you are extremely weak.
But the big flaw here is that if your car is at all modern, it will have DFCO, which means that it will use no fuel while decelerating/coasting in gear, but will use fuel if it's idling in neutral.
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I've been testing the car these days .
in neutral, I turned off the engine and tried the brakes , I braked 3 or 4 times and it worked well .
the other time prove the brake scared me , it was downhill , the car in front , brake and I approached too quickly .